MathTime Professional ver 2 (MTPro2) fonts are mathematical TeX fonts
compatible with the Times Roman text fonts. They were created by
Michael Spivak of Publish or Perish Press. These are high-quality
commercial fonts. There is a free subset called "MTPro2 Lite" that
consists of 15 fonts and replaces the Computer Modern math fonts. The
complete set consists of 68 fonts and provides also script, curly,
Fraktur, bold math, blackboard bold fonts, and AMS symbols.
Homepage: http://pctex.com/mtpro2.html